Milking-machine.



T. E. WAWRINSKY & H. F. ALBIHN.

MILKIN G MACHINE.

APPLICATION FILED MAR. 20, 1909.

Patented Feb.8, 1910.

R/VE KS.

mr/msses: C525. W 1 -WDM UNITED STATES .THURE ERNFRID WAWRINSKY AND HARRY FREDRIK ALBIHN, 0F STOCKHOLM,

SWEDEN, ASSIGNORS T0 MJ'ORKNINGSMASKINAKTIEBOLAGET, OF STOCKHOLM,

SWEDEN, 'A COMPANY.

Specification of Letters Patent.

Maxine-MACHINE.

Patented Feb. 8, 1910.

Application filed March 20, 1909. Serial No. 484,6401}.

To all whom it may concern:

Be it known that we, THURE ERNFRID YAWRINSKY and HARRY FREDRIK ALBIHN, subjects of the King of Sweden,'residing at Stockholm, Sweden, have invented a new and useful Improvement in Milking-Machines; and we hereby declare the following to be a full, clear, and exact description of the same, due reference being had to the accompanying drawings, which form part of this specification.

.Our invention relates to an improved tube used in withdrawing the milk from the milking organs. In such milking organs, the teats are operated by means of the intermittent conducting of a pressure medium (compressed air) into one or several tubes or pipes surrounding the teat. These are preferably made in the form of a ribbon which by the introduction of the air under pressure are blown up to circular or elliptical sections in order to contract again to the shape of a ribbon at the evacuation.

It is important that the material of which the tubes are made be at the same time thin and strong. The material should be such as not to permit any, or at least a very slight, expansion beyond the natural circular section of the tubes or in other words, that no expansion of the material itself of the tubes may ensue, no matter how much the inner pressure may be raised Within certain limits determined by the strength of the material. A tube of caoutchouc only cannot serve this purpose, because it expands irregularly owing to varying thickness of the material and unequalness in the same, as soon as the inner pressure has grown so much that the tube expands beyond its normal dimensions. At those points, where the material is thinnest, there will easily be blisters and the material loses quickly its elasticityin these places and breaks. RV

Our impro ed pipe or tube is made either of a textile material, for instance hemp, linen cotton, silk or the like, which in a suitable manner has been made air-tight, for instance by impregnation with varnish, liquid caoutchouc or another suitable material, or it may substantially consist of caoutchouc with an insertion of a textile material.

ing one or both sides with a suitable material, is especially suitable for the manufacture of the inflatable tubes or pipes in question. In order to render this material made air-tight by impregnation or by coatstronger and closer against the inner pressure, it may be redoubled or multiplied.

This improved tube will well answer the requirement.

The best manner of forming this tube is as follows: A piece of balloon-silk corresponding to the dimensions of the desired tube is coated with a suitable binding substance, for instance a solution of caoutchouc, and rolled up in two or several layers, for instance on a wooden roller. After havin been pulled off the Wooden roller and drie the stiif tube, composed in this manner, is flattened and is then ready to be inserted in the milking organ, the ends of the stiff tube having been joined together and the necessary air-pipe having been connected thereto.

lVe will now describe the embodiment of our invention illustrated in the accompanying drawings, in which Figure 1 is a longitudinal section of a milking organ with an embodiment of our improved tube applied thereto. Fig. 2 is a magnified cross section of an embodiment of our improved tube.

a is the milking organ, b the tube havin silk portion 0 coated with the-caoutchouc e is the orifice of the tube.

f is the pipe leading to operating apparatus not shown.

Having now fully described our invention, what we claim and desire to protect by Letters Patent is:

1. Tubes or pipes for the milking-organ of a milking machine working with pressure air, comprising a ribbon of an inelastic textile material, which is impregnated with a relatively. thin and tight layer of a substance rendering it air-tight.

2. Tubes or pipes for the milking-organ of a milking machine workin with pressure air, comprising a ribbon of silk fabric, whlch is impregnated with a substance rendering it air-tight and coated with a suitable tlghtening and binding substance, said rlbbon being rolled up into a plurality of layers and flattened to the shape of a ribbon closed at its ends.

3. Tubes or pipes for the milk ng-organ of a milking machine working with pressure air, comprising a ribbon of an inelastic textile material, which is impregnated with a relatively thin and tight layer of asubstance rendering it air-tight, and provided with a relatively thick layer of caoutchouc, said caoutchouc forming the principal material of the tube, while the textile material constitutes the lining thereof.

4. Tubes or pipes for the milking-organ of a milking machine workin with pressure air, comprising a ribbon of silk fabric, which is impregnated with a substance rendering it airtlght and coated with a suitable tightening and binding substance.

In testimony, that we claim the foregoing 15 as our invention, we have signed our names in presence of two subscribing witnesses.

' THURE ERNFRID WAWRINSKY.

HARRY FREDRIK-ALBIHN.

Witnesses: CARL F RIBERG, GUST. A. ALsoN. 

